Casting the heavy weight with that much line out requires a little more finesse with braid, but it works. However, if it does wrap, you can snap at the spool. With braid floating, getting it back may be possible. Be aware of your knot, the rubbing may fray the braid, check often!

I don't use tungsten with C-rig, but use braid main line and 20lb flouro leader line. Works well for me. You also don't have to worry about sweeping set or hard set or rod in perfect position when setting the hook. You just stick the pig at a half hearted set and start reeling.

Always braid for my main line. Always....and I basically hate braid. I only use it for frogs and C-rigs. Nothing is more sensitive then braid especially on loooong deep water casts. You will feel everything and be able to set the hook easily even with lots of line out due to the low stretch. I have never had problems with snapping the braid on casts. Just do a big side arm lob style cast and you can throw it a mile. And yes, when you do hang up you usually only loose the hook, bait and maybe leader instead of the entire set up.